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riadik2000 [5.3K]
3 years ago
7

ABCD is a rectangle. What is the value of x?

Mathematics
2 answers:
kvv77 [185]3 years ago
6 0
The answer is 33 meters
use the Pythagorean theorem 
56^2+x^2=65^2
3136+x^2=4225
x^2=1089
x=33
oksano4ka [1.4K]3 years ago
5 0

Answer:

33m

Step-by-step explanation:

In A rectangle with a diagonal, the diagonal line divides the rectangle into two right angled triangle.

The diagonal serves as the hypotenuse and the other two sides serves as the opposite and adjacent.

According to Pythagoras theorem;

Hypotenuse ² = Adjacent ²+opposite ²

If diagonal = 65m = hypotenuse

Let Length = opposite = 56m and;

width = adjacent = x

Substituting this values in the formula we have;

65² = x²+56²

x² = 65²-56²

x² = 1089

x = √1089

x = 33m

Therefore the width of the rectangle is 33m

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The sum of three number is 126. The third number is 4 times the second. The second number is 6 less than the first. What are the
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Step-by-step explanation:

ASK



ALGEBRA II

 

Ingrid H.

 asked • 04/02/20

The sum of three numbers is 126 . The third number is 3 times the first. The second number is 6 more than the first. What are the numbers?

The sum of three numbers is 126

. The third number is 3

 times the first. The second number is 6

 more than the first. What are the numbers? 

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1 Expert Answer

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Newest Oldest



Mackenzie K. answered • 04/02/20

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Lets define a=1st number, b=2nd number, and c=3rd number

We know that a+b+c=126

We also know that the second number is 6 more than the first, so we can represent this as b=a+6

We also know that the third number is 3 times the first which can be represented as c=3a

We can plug these new values into our original equation and get:

a+(a+6)+(3a)=126

2a+6+3a=126 COMBINE LIKE TERMS

5a+6=126

5a=120

a=24

Our first number is 24.

Our second number is 6 more than our first number, so the second number is 24+6=30

Our third number is 3 times the first number, so the third number is 3(24)=72

We can check by plugging these numbers in for a, b, and c in our original equation

a+b+c=126

24+30=72=126

126=126

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